Water-soluble declaration
The composition lists nutrients declared as water-soluble on this product's own label. Mix the measured concentrate thoroughly in water.
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- NPK concentrate with trace nutrients for ferns
- Product-specific dilution calculator
- Root and foliar use according to the label
Fronds rather than flowers
For ferns within this product's own labelled scope. Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
- Declared NPK
- 1.2 + 2 + 3With declared trace nutrients.
- Dilution
- 5 ml per 1 l waterEvery 1–2 weeks during active growth.
- Application
- Roots & foliageDilute with water before use.
- Regular application period
- March–OctoberApply only during active growth.
Product information
Application & dilutionMix and apply according to this product's own directions.
Application in one place
Measure. Mix. Apply.
Dilution calculator · ferns
5 ml per 1 l water.
Your water amountRough watering-volume guide
1 l
Matching concentrate amount
5 ml
Measure the calculated concentrate with a suitable measuring aid. Do not estimate small amounts by eye.
Enter a water amount from 0.1 to 1,000 litres.
Use the water volume actually needed. Plant height alone does not provide a reliable watering volume.
How the guide is calculated
Concentrate (ml) = water (l) × 5 ÷ 1.
Prepare a clean container
Use a suitable clean watering can or sprayer and follow this product's water directions.
Choose the water volume
Choose the amount actually needed. Check root-ball moisture and drainage before watering.
Add water first
Start with part of the selected water volume.
Shake and measure
Shake the bottle well. Measure the concentrate calculated for the selected water volume accurately.
Add the concentrate
Add the measured amount to the water; never apply concentrate directly to the plant.
Top up and mix
Top up to the chosen water volume and mix thoroughly. Water or spray according to this product's own directions.
When to feed? 5 ml per 1 l water · Every 1–2 weeks during active growth. 5 ml per 1 l water. Every 1–2 weeks during active growth. Regular application period: March–October. Do not use undiluted. Shake well before use. Preferably use low-lime water or rainwater at 15–25 °C. Do not apply in direct sunlight or at temperatures below 5 °C or above 30 °C. Apply to a pre-moistened root zone or spray the foliage. Do not spray open flowers.
Watering · through the roots
Many ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
Spraying · onto the leaves
The label permits root and foliar feeding. Spray prepared solution onto leaves, avoiding open flowers. Both routes contribute to the same nutrient supply.
Characteristics & pack sizesThe concentrate and pack sizes at a glance.
Suitable for root and foliar feeding. Dilute with water before use.
Net mass: 266 g per 250 ml. The twin pack contains two bottles of the same formula.
| Pack size | Price | Yield at label dilution |
|---|---|---|
| 250 ml | 9.85 € Unit price ( 39.40 €/ l) | 50.0 l |
| 500 ml – twin pack (2 × 250 ml) | 18.95 € Unit price ( 37.90 €/ l) | 100.0 l |
Yield at the labelled standard dilution; account for pack size and existing nutrients.
Fits your care routine
Ferns
For ferns within this product's own labelled scope. Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
During active growth
5 ml per 1 l water · Every 1–2 weeks during active growth. 5 ml per 1 l water. Every 1–2 weeks during active growth. Regular application period: March–October. Do not use undiluted. Shake well before use. Preferably use low-lime water or rainwater at 15–25 °C. Do not apply in direct sunlight or at temperatures below 5 °C or above 30 °C. Apply to a pre-moistened root zone or spray the foliage. Do not spray open flowers.
Allow for fresh compost
Many ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
Understand this formulation
Add nutrients at the right dilution
NPK 1.2 + 2 + 3 Declared nutrient percentages. Product pH: 6.7. This does not describe the pH of the diluted solution or the soil. 1.25% total nitrogen (N) 2% water-soluble phosphate (P₂O₅) 3% water-soluble potassium oxide (K₂O) 1% urea nitrogen 0.0025% boron (B) 0.001% copper (Cu) · EDTA chelate 0.005% iron (Fe) · EDTA chelate 0.003% manganese (Mn) · EDTA chelate 0.0003% molybdenum (Mo) 0.001% zinc (Zn) · EDTA chelate
Declared trace nutrients
See this product's declaration for amounts and any chelate bindings. This does not justify an additional unmeasured trace-nutrient feed.
Account for water and position
Follow this product's water and application directions. Concentrate pH does not establish a guaranteed pH for soil or diluted solution.
Measure accurately and store correctly
Retain the original container and labelling and follow this product's full directions.
Nutrients in context
Nutrition, light, water and root condition work together. Extra fertiliser cannot correct insufficient light or damaged roots.
Many ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
Use clean suitable containers and an appropriate measuring aid.
Products
GREEN24 confirms that this liquid fertiliser can be mixed with one of the following products at a time: Kiron® Milben-Ex, Schädlings-Frei-Organic or Trauermückenfrei Organic. Confirmation applies to fertiliser plus one individual product. Select and dose the plant protection product according to its current instructions for the relevant crop, pest, application site and method. This does not confirm that the three plant protection products can be mixed with one another.
Do not mix undiluted concentrates together. Follow the confirmed mixing conditions and application routes of each product.
Nutrient compositionThe complete product-specific declaration.
Declared nutrient percentages. Product pH: 6.7. This does not describe the pH of the diluted solution or the soil.
- 1.25% total nitrogen (N)
- 2% water-soluble phosphate (P₂O₅)
- 3% water-soluble potassium oxide (K₂O)
- 1% urea nitrogen
- 0.0025% boron (B)
- 0.001% copper (Cu) · EDTA chelate
- 0.005% iron (Fe) · EDTA chelate
- 0.003% manganese (Mn) · EDTA chelate
- 0.0003% molybdenum (Mo)
- 0.001% zinc (Zn) · EDTA chelate
GREEN24 · Plant knowledge
Fronds rather than flowers
Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Foliage and habit
Coiled young fronds unfold gradually. Spore clusters beneath fronds are often normal.
Spore clusters
Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Growth and care
Many ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
Matching products
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( 1.20 €/ l)
Choose for the appropriate planting or repotting task. After 4–6 weeks, begin supplementary feeding as directed on the label where growth and nutrient supply require it. Account for soil reserves outdoors and initial compost nutrients in pots.
10 litres
Delivery time: In stock · 1–3 days (DE)
Incl. VAT, plus shipping costs
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BERGER
BERGER 5610 narrow planting trowel
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Growth & nutrient uptake
Leaves use light; roots take up water and mineral nutrients. The diagrams show how plant organs work together and how nutrients are absorbed.
Roots, foliage and growth
RootsFronds arise from a rhizome according to species; the actual roots take up water and dissolved nutrients.
Many ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
FrondsCoiled young fronds unfold gradually. Spore clusters beneath fronds are often normal.
Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Shoots and habitDepending on species, vase-shaped clumps, creeping rhizomes or arching fronds.
Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Spore clustersNo flowers; reproduction by spores
Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Understand nutrient uptake
Choose a route and station.
Station 01 / 04
The diluted solution
Many ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
For application5 ml per 1 l water · Every 1–2 weeks during active growth. 5 ml per 1 l water. Every 1–2 weeks during active growth. Regular application period: March–October. Do not use undiluted. Shake well before use. Preferably use low-lime water or rainwater at 15–25 °C. Do not apply in direct sunlight or at temperatures below 5 °C or above 30 °C. Apply to a pre-moistened root zone or spray the foliage. Do not spray open flowers.
Learn more
Many ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
Station 02 / 04
Contact with fine roots
Fronds arise from a rhizome according to species; the actual roots take up water and dissolved nutrients.
For applicationFerns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Learn more
Fronds arise from a rhizome according to species; the actual roots take up water and dissolved nutrients.
Station 03 / 04
Regulated uptake
Membranes and transport proteins regulate nutrient entry into living root cells. Extra fertiliser does not repair damaged or oxygen-starved roots.
For applicationFerns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Learn more
Membranes and transport proteins regulate nutrient entry into living root cells. Extra fertiliser does not repair damaged or oxygen-starved roots.
Station 04 / 04
Transport through the plant
Water and absorbed nutrients move towards growing organs. The drawing explains a functional pathway, not measured performance of this fertiliser.
For applicationMany ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
Learn more
Water and absorbed nutrients move towards growing organs. The drawing explains a functional pathway, not measured performance of this fertiliser.
Station 01 / 04
Wet foliage as directed
The label permits root and foliar feeding. Spray prepared solution onto leaves, avoiding open flowers. Both routes contribute to the same nutrient supply.
For application5 ml per 1 l water · Every 1–2 weeks during active growth. 5 ml per 1 l water. Every 1–2 weeks during active growth. Regular application period: March–October. Do not use undiluted. Shake well before use. Preferably use low-lime water or rainwater at 15–25 °C. Do not apply in direct sunlight or at temperatures below 5 °C or above 30 °C. Apply to a pre-moistened root zone or spray the foliage. Do not spray open flowers.
Learn more
The label permits root and foliar feeding. Spray prepared solution onto leaves, avoiding open flowers. Both routes contribute to the same nutrient supply.
Station 02 / 04
The relevant leaf surface
Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development. Leaf surfaces affect wetting; do not assume one uptake rate for every species.
For applicationFerns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Learn more
Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development. Leaf surfaces affect wetting; do not assume one uptake rate for every species.
Station 03 / 04
Entry into leaf tissue
The outer leaf barrier and other pathways influence entry of dissolved substances. The cell view is schematic; droplets do not automatically pass freely through every stomatal opening.
For applicationFerns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Learn more
The outer leaf barrier and other pathways influence entry of dissolved substances. The cell view is schematic; droplets do not automatically pass freely through every stomatal opening.
Station 04 / 04
Part of the total nutrient supply
Absorbed substances are used or transported within the plant. Account for foliar and root applications together rather than adding two full feeding programmes.
For applicationMany ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
Learn more
Absorbed substances are used or transported within the plant. Account for foliar and root applications together rather than adding two full feeding programmes.
Observe development
Distinguish growth from rest
Young plants and establishment
Handle roots gently and retain the existing crown level.
Active growth
5 ml per 1 l water · Every 1–2 weeks during active growth. 5 ml per 1 l water. Every 1–2 weeks during active growth. Regular application period: March–October. Do not use undiluted. Shake well before use. Preferably use low-lime water or rainwater at 15–25 °C. Do not apply in direct sunlight or at temperatures below 5 °C or above 30 °C. Apply to a pre-moistened root zone or spray the foliage. Do not spray open flowers.
Rest period
Keep tropical indoor ferns frost-free; follow species-specific hardiness for garden ferns.
Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
Application & calculator →Growing conditions & care problems
Adapt care to the growing conditions and stage of growth. If you notice changes, check light, water and roots first — then take targeted action.
Growing conditions
In containers
Many ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level.
In the garden
Choose filtered light or shade suited to the species. Strong midday sun can damage delicate fronds. Many ferns prefer consistent moisture without a waterlogged pot. Not every fern needs the same moisture level. Keep tropical indoor ferns frost-free; follow species-specific hardiness for garden ferns.
Winter and rest
Keep tropical indoor ferns frost-free; follow species-specific hardiness for garden ferns.
Planting and repotting
Handle roots gently and retain the existing crown level.
Observe and identify the cause
Scale insects or spore clusters?
Regular spore clusters are part of reproduction in many ferns. Inspect irregular waxy colonies, sticky leaves or moving insects more closely.
Brown frond tips
Check root-ball moisture, dry air and direct sun. Brown tips alone establish neither fungal disease nor nutrient deficiency.
Position before fertiliser
When growth slows, first assess light, temperature, dormancy and roots. Nutrient deficiency is only one possible cause.
Discuss the care problem
These details help assess the problem:
- Record plant species, position and recent changes.
- Describe root-ball moisture, drainage and previous feeds.
- Provide an overview and clear photos of affected organs.
This guidance supports investigation; it does not replace a reliable diagnosis or authorised plant-protection directions.
Mixable with this fertiliser
This product can be mixed with this fertiliser.
Use plant protection products safely. Always read the label and product information before use.
PLANTS A–Z
ferns in the plant guide
Explore position, root space and care for the actual plant.
View the plant guide
PRACTICAL ADVICE
What limits plant growth
Consider light, water, roots and nutrients together.
Read the guide
Quality products
Horticultural expertise
Our own production
Made in GermanyGREEN24's own products
Quick answers before you buy (FAQ)
Which plants is this concentrate intended for?
For ferns within this product's own labelled scope. Ferns produce neither flowers nor seeds. Regular spore clusters beneath fronds can be part of normal development.
How is it diluted and applied?
5 ml per 1 l water · Every 1–2 weeks during active growth. 5 ml per 1 l water. Every 1–2 weeks during active growth. Regular application period: March–October.
How much prepared solution does each pack make?
250 ml → 50 l; 500 ml – twin pack (2 × 250 ml) → 100 l. Calculated yield at this product's standard dilution; plant needs determine the amount applied.
What application limits apply?
Do not use undiluted. Shake well before use. Keep out of reach of children and animals. Preferably use low-lime water or rainwater at 15–25 °C. Do not apply in direct sunlight or at temperatures below 5 °C or above 30 °C. Apply to a pre-moistened root zone or spray the foliage. Do not spray open flowers.
Safety and storage
Safety instructions
SDS – Safety data sheet available on request.
- Do not use undiluted. Shake well before use.
- Keep out of reach of children and animals.
- Preferably use low-lime water or rainwater at 15–25 °C.
- Do not apply in direct sunlight or at temperatures below 5 °C or above 30 °C.
- Apply to a pre-moistened root zone or spray the foliage. Do not spray open flowers.
Official advisory recommendations take precedence.
Wash your face and hands thoroughly. Use diluted fertiliser promptly and keep it out of water bodies and wastewater.
Product GPSR safety information
The original leaflet supplements this product’s own instructions. Use dilution stages only within their stated scope; standard dilution remains the basis of yield.
Storage
Storage and product quality
Dry · dark · above 8 °C to a maximum of 38 °C Store in a dry, dark place above 8 °C and at no more than 38 °C. Keep out of reach of children and animals.
Keep tightly closed in the original container, separate from food and animal feed.
Dry · dark · above 8 °C to a maximum of 38 °C Store in a dry, dark place above 8 °C and at no more than 38 °C. Keep out of reach of children and animals.
Keep fertiliser residues and wash water out of waterways and sewage. Follow packaging disposal directions.
Prepare only the amount needed and never apply undiluted.
Manufacturer / company placing the product on the market
Guides for this product
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